Fly screen



y 30, 1929- c. SCHNElDER ET AL 1,722,947

FLY SCREEN Filed Nov. 4, 1927 Patented July 30, 1929.

UNITED STATES ALBERT C. SCHNEIDER, OF FORT THOMAS, AND HARRY KENTUCKY,ASSIGNORS TO THE CINCINNATI FLY E. SCHNEIDER, 0F NEWPORT, SCREENCOMPANY, OF CIN- OINNATI, OHIO, A CORPORATION OF OHIO.

FLY SCREEN.

Application filed November 4, 1927. Serial No. 231,131.

This invention relates to improvements in rewirable metal fly screenframes and par ticularly to the fabrication and structure of a sheetmetal molding from which the screen frame is built and to the cornerreinforcement or angle braces for joining a. pair of miter cut ends ofthe molding in making a rectangular frame.

An object of the invention relates to the construction of corneror angleplates for rigidly joining abutting miter cut ends of a metallic screenframe and for hingedly mounting the frame in position for use.

ther features and advantages of the invention are more fully set forthin the description of the accompanying drawings, in which:

Figure 1 is a plan view of a portion of a sheet metal window screenframe with the screen applied and with one of the corners of the frameshown in section for illustrating the corners of angular plates engagedwithin the metal framing for uniting and reinforcing the miter cut endsthereof.

Figure 2 is an enlarged section taken on line 2-2, of Figure 1.

Figure 3 is a perspective view of a pair of channel formed angle platesas combined for producing a corner brace or connector for the sheetmetal frame molding building up the frame and illustrating a pin engagedtherethrough providing a hinge pintle for swingingly mounting the frame.

Figure 4 is a perspective view of one of the angle plates.

Figure 5 is a perspective view of a supplemental angle plate as a cornerreinforcement inserted within a groove, in which the metal screen orgauze is secured.

The screen frame is built up from sheet metal molding of particularformation to comprise a tubular body portion and a channel portion forreceiving and clamping the metal screen fabric or gauze to the frame bya channel form of beading compressed into the channel or groove of theframe which in principle follows a well ecognized commercial form ofsheet metal framing or molding for window screen frames.

To maintain such channel characteristics of the molding or framing andto reinforce and strengthen the same at and along the screen fabricreceiving and fastening groove or channel, the molding is preferablyformed.

by bending, crimping and corrugating the metal to give the same thesectional structure.

Referring to Figure 2 which illustrates the cross section of thestructure of the molding, formed of a single sheet of metal and bent tocomprise a rectangular hollow or tubular body portion 1 with theopposite longitudinal ends of the sheet metal brought together andlapped upon one another in continuing beyond one edge of the bodyportion. One side wall designated as a base wall 2 extends from the bodyportion and in continuing plane for the base of the channel 3 along oneedge of the body portion, and thence bends or extends at right anglesfor the width of the body, forming an outside wall 4- 0f the channel,with its end 5 crimped inwardly upon itself to provide a doublethickness of edge for said channel wall. The crimp bend, if desired, maybe different by soldering or welding the same to the channel wall. Theopposite longitudinal end of the sheet is bent into form to provide anintermediate wall 6 providing the inside end Wall of the body port-ionand channel, and a channel base wall 7 is lapped upon the ex tendedportion of the base wall 2, forming an additional base wall for thechannel for providing a. double ply thickness for the channel base, anda right angled edge or end lapping upon the outside channel wall l.lVith the opposite edges of the sheet metal lapped or crimped upon theoutside channel wall 4, the wall is practically of two pl thickness,giving the same increased rigidity and stability to sustain the screenfabric 8 which is secured to toe molding or screen following crossframeby engaging an end thereof over the edge of the channel wall 4, andinto the channel to be clamped in position by a channel or other form ofbeading 9 compressed into the channel.

Togive increased rigidity to the molding, and to prevent theintermediate Wall 6 from shifting laterally or thrown out of square whenthe beading is inserted, the lapped channeled base walls jointly arecompressed into a corrugation 10 longitudinally of the channel, thusbinding the parts securely together, as well as offering reinforcement.This is of material advantage in the structure of the moldin and alsoadds to the n, ornamental effect of the molding.-

The beading 9 for clamping the screen fabric into the channel of theframe or molding, as illustrated, comprises a strip of sheet metal bentinto channel or ii form with its opposite ends crimped inwardly with thecrimp 16 disposed at an angleso that the wall edge of the heading servesas a wedge for binding the screen fabric between the wall l and basecorrugation 10 of the channel.

For building up the molding into a screen frame, the molding is cut intodefinite length with its opposite longitudinal ends mitered to make acorner joint for the frame, and interlocked with an angled dowel orcorner brace engaging into the tubular body 1. The dowel or corner bracepreferably comprises .a pair of right angled channel plates l111 ofduplicate construction, engaged together with their channel sidesopposing, combining the same into tubular form, with their opposite endsor edges forming in the channel, overlapping one another. hen thuscombined the corner plates compare to the inside measurement of the bodyportion of the molding so as to make a friction fit therewith whenengaged therein.

Each channel corner or angle plate 11 comprises a sheet metal stampingwith the limbs thereof of U or channel form in cross section, and withone limb thereof having its base wall corrugated longitudinally, and theother limb provided with a pair of inturned tangs l212, compressedinwardly from the body of the metal, for sustaining and confining a pin13.

The pin as shown in Figure 1 is rigidly secured to the frame by a rivetlet extending through the frame at the lower end of the pin, while theupper or opposite endprojects or extends beyond the edge of the framefor engaging into a socket in the window frame to which the screen frameis applied. This provides a spindle for hingedly mounting the screenframe, and in practice is similarly provided with a pin engaged with theangle or corner base plates but usually slidable and operated by a leverhaving a finger engaging end accessibly extending from the frame. Theuse of fixed and slidable pins at relative opposite ends or corners ofthe screen frame for hinge mounting is a general prac tice, so that nonovelty is herein claimed in the provision thereof, but only as to themethod of mounting the pins, and in the structure of the angle plate,for guidingl or confiningly sustaining the pins.

To further reinforce the corner of the frame, a corrugated angle plate15 isinserted within the channel under a friction or drive lit, with thecorrugation nesting over the corrugation in the base wall of themolding. Thus by joining the mitered corners by a pair of angle platesengaged within the body portion of the molding, and a single angle platewithin the channel, the entire joint length is reinforced and sealed sothat no light is visible through the joint, due to failure to completelyabut the mitered surfaces, which otherwise detracts from the generalappearance of the frame or impairs the worlnnanship, but in some casesit is desired not to bring the joint surfaces home. In fitting theframe, the corner plates usually are not permanently fixed so as toallow such slight shifting.

The outer wall of each tubular body is punched as at 16 to limit thesliding of the bodies over the right angled channel plates 11. Theabutments created by the punchengage the outer ends of the respectivechannel plates 11 and provide that the bevelled edges of the tubularbodies fit snugly and do not extend beyond their true mating position.

Having described our invention, we claim:

1. A sheet metal screen frame, comprising, a sheet metal moldingconstituting a tubular body portion with a longitudinal channel alongone side edge thereof, and corner braces for use in assembling definitemolding lengths into a frame and engaged into the end of the tubularbody portion, each brace constituting a pair of angle channel.

plates set together with their channels opposing and the flanges of theplates rela tively overlapped, and having tangs depressed inwardly fromone limb of the angle plates for sustaining a. pin inside of said braceand beyond the corner, and extending beyond the corner of the frame forhingedly supporting the frame.

2. A sheet metal screen frame, comprising, a sheet metal moldingconstituting a tubular body portion with a longitudinal channel alongone side edge thereof, corner braces for use in assembling definite mold:ing lengths into a frame, and engaged into the end of the tubular bodyportion, each brace constituting a pair of angle channel plates settogether with their channels opposing and the flanges of the platesrelatively overlapped, and having tangs depressed inwardly from one limbof the angle plates for sustaining a'pin inside of said braces andbeyond the corner, and extending beyond the corners of the frame forhingedly supportthe frame, and a second angle brace plate compressivelyengaged into the channel portion of said molding and at the corners ofthe frame.

3. A metal screen frame, comprising, a sheet metal molding constitutinga tubular body portion with a longitudinal channel on one side edgethereof, and corner braces for use in assembling lengths of molding intoa frame, said braces each formed of a pair of angle channel plates settogether rith their channels opposing, and the sic es of the platesoverlapped, and providing a overlapped, and providing a contourdimension to frictionally engage into the ends of the tubular bodyportion of the molding, and a second corner brace engaged into the channel of the molding at the corners of the frame, each brace formed of acorrugated angle plate.

In Witness whereof, we hereunto subscribe our names.

ALBERT C. SCHNEIDER. HARRY E. SCHNEIDER.

